805900 has 18 divisors (see below), whose sum is σ = 1749020. Its totient is φ = 322320.

The previous prime is 805891. The next prime is 805901. The reversal of 805900 is 9508.

It is not an unprimeable number, because it can be changed into a prime (805901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3930 + ... + 4129.

2⁸⁰⁵⁹⁰⁰ is an apocalyptic number.

It is an amenable number.

805900 is an abundant number, since it is smaller than the sum of its proper divisors (943120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

805900 is a wasteful number, since it uses less digits than its factorization.

805900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8073 (or 8066 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 805900 is about 897.7193325311. The cubic root of 805900 is about 93.0594293908.

The spelling of 805900 in words is "eight hundred five thousand, nine hundred".